Frequencies for first 10,000 rows of ped_srvc_cd variable in pos2003 dataset :

       srv: |
  pediatric |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,789       87.89       87.89
          0 |        623        6.23       94.12
          1 |        541        5.41       99.53
          2 |         30        0.30       99.83
          3 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017